Convert the pp::proxy namespace to the ppapi::proxy namespace.

ppapi/proxy/ppb_pdf_proxy.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef PPAPI_PPB_PDF_PROXY_H_
 #define PPAPI_PPB_PDF_PROXY_H_
 
 #include "ppapi/c/pp_module.h"
 #include "ppapi/proxy/interface_proxy.h"
 #include "ppapi/shared_impl/host_resource.h"
 
 struct PPB_PDF;
 
-namespace pp {
+namespace ppapi {
 namespace proxy {
 
 struct SerializedFontDescription;
 
 class PPB_PDF_Proxy : public InterfaceProxy {
  public:
   PPB_PDF_Proxy(Dispatcher* dispatcher, const void* target_interface);
   virtual ~PPB_PDF_Proxy();
 
   static const Info* GetInfo();
@@ skipping 10 matching lines @@
   void OnMsgGetFontFileWithFallback(PP_Module module,
                                     const SerializedFontDescription& desc,
                                     int32_t charset,
                                     ppapi::HostResource* result);
   void OnMsgGetFontTableForPrivateFontFile(const ppapi::HostResource& font_file,
                                            uint32_t table,
                                            std::string* result);
 };
 
 }  // namespace proxy
-}  // namespace pp
+}  // namespace ppapi
 
 #endif  // PPAPI_PPB_PDF_PROXY_H_